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FOX QS3 PIGGYBACK SHOCKS 12.5? DYNA 1991–2017 (NU)
FOX QS3 piggyback 12.5? for Dyna 1991–2017 (NU). Aluminum side reservoirs for increased volume and cooling, QS3 3-position for compression and rebound, IFP mono-tube, STD linear spring, and preload with guide markings.
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Quick Adjustments and Thermal Consistency. The FOX QS3 Piggyback 12.5? feature side reservoirs made of aluminum that increase fluid capacity and enhance heat dissipation. The QS3 system offers 3 switchable positions for compression and rebound, adapting the feel to the road, tires, and load.
The IFP mono-tube architecture prevents foaming and keeps damping stable and predictable. Body 6061-T6 Ø1.5? with hard anodized TIII, shaft Ø5/8? hard chrome plated, linear STD spring and preload with guide marks and included wrench.
Technical Specifications
| Application | Harley-Davidson Dyna 1991–2017 (NU) |
|---|---|
| Length | 12.5? (standard height) |
| Architecture | Mono-tube gas (IFP) with piggyback reservoir |
| Adjustments | QS3 3 positions for compression and rebound · Preload |
| Body | Aluminum 6061-T6 Ø1.5?, hard anodized Type III |
| Shaft | Ø5/8? hard chrome plated |
| Spring | Standard Duty Linear Rate |
| Rebuild | 100% rebuildable and re-valvable |
| Includes | Plastic preload wrench (non-branded) |
Compatibility
- Dyna 1991–2017 (NU)
Benefits
- Superior thermal management (piggyback).
- QS3 3 positions: comfort / extra support / maximum support.
- Consistent hydraulics with IFP.
Setup
- Base: QS3 medium · sag 25–30%.
- Open for bumps; close for high pace.
- MOTORCYCLE BRANDS
- HARLEY DAVIDSON
- HARLEY DAVIDSON MODELS
- Dyna
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